var os=document.getElementById("sidebar")
if((Math.floor(Math.random()*2)+1)==1)os.style.right='20px';else os.style.right='20px'
lastScrollY=0;
function heartBeat(){ 
var diffY;
if (document.documentElement && document.documentElement.scrollTop)
 diffY = document.documentElement.scrollTop;
else if (document.body)
 diffY = document.body.scrollTop
 
//alert(diffY);
percent=.1*(diffY-lastScrollY); 
if(percent>0)percent=Math.ceil(percent); 
else percent=Math.floor(percent); 
os.style.top=parseInt(os.style.top)+percent+"px";
lastScrollY=lastScrollY+percent; 
//alert(lastScrollY);
} 
window.setInterval("heartBeat()",1);